One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,6)(3,5,7,8)(9,10)(11,14)(12,16)(13,15)(18,23)(19,27)(20,21)(24,32)(25,26)(28,31)(1,3)(2,5)(4,7)(6,8)(9,11,13,16)(10,14,15,12)(17,18,20,25,22,26,21,23)(19,28,30,31,27,24,29,32)(9,12,13,14)(10,11,15,16)(17,19,22,27)(18,24,26,28)(20,30,21,29)(23,31,25,32)(3,7)(5,8)(10,15)(11,16)(17,20,22,21)(18,25,26,23)(19,29,27,30)(24,31,28,32)(17,18,20,25,22,26,21,23)(19,28,30,31,27,24,29,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.